Urine Sediments Flashcards
pale disk of 7 um diameter; crenated or dysmorphic
erythrocytes
cell with trilobed nucleus of 12 m diameter
neutrophils
oblong or egg-shaped,14-60 m cells with central
nucleus
renal cell
40-200 m cells, round or pear-shaped with central
nuclei
transitional epithelial cell
. large and flat, abundant folded cytoplasm, central nuclei
squamous cells
translucent cast with variable matrix, low refractive
index
hyaline cast
cast that have disintegrated to form tapering ends/tails
cylindricoids
. casts with high refractive index, cracks visible
waxy cast
. 2-6X the diameter of normal casts due to stasis at DCT
broad cast
. 2-4 m clumpy cells that are best seen with PCM & EM
platelets
best seen with Gram stain; commonly rod-shaped cells
bacteria
refractile cells with characteristic budding
yeast
. exhibits Maltese cross with polarizing filters
starch granules
yellow to brown lemon-shaped, rosettes or wedge
crystals
uric acid crystals
. octahedral envelope or dumbbell crystals
calcium oxalate
. yellow-brown spheres known as thorn-apples
ammonium biurates
crystals are colorless spheres appearing in pairs or fours
calcium carb onate
refractile hexagonal plates that is sometimes twinned
cystine
yellow, oily appearing spheres with radial striations
leucine
. silky needles that appear in sheaves after refrigeration
tyrosine
colorless-yellow-brown sheaves of wheat with central
bind
sulfonamide
crystals with coffin lid or fern forms in alkaline urine
triple phosphate
. yellow-brown granules or sanding; called as brick dust
amorphous urate
macroscopically seen as fine lacy precipitate in basic
urine
amorphous phosphate
long, ribbonlike structures with split ends; mistaken as
casts
mucous threads
